Date: Sun, 25 May 2003 23:51:15 +0300 (EEST) From: Giorgos Keramidas <keramida@ceid.upatras.gr> To: Santos <sansan@cas.port995.com> Cc: freebsd-security@freebsd.org Subject: Re: ipfirewall(4)) cannot be changed Message-ID: <20030525234819.U21691@gothmog> In-Reply-To: <3ED06967.90306@cas.port995.com> References: <3ED06967.90306@cas.port995.com>
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On 2003-05-25 07:57, Santos wrote: > root@vigilante /root cuaa1# man init |tail -n 130 |head -n 5 > > 3 Network secure mode - same as highly secure mode, plus IP packet > filter rules (see ipfw(8) and ipfirewall(4)) cannot be changed and > dummynet(4) configuration cannot be adjusted. > > root@vigilante /root cuaa1# sysctl -a |grep secure > kern.securelevel: 3 > [...] > root@vigilante /root cuaa1# sysctl net.inet.ip.fw.enable=0 > net.inet.ip.fw.enable: 1 -> 0 > > root@vigilante /root cuaa1# ping 216.136.204.21 > PING 216.136.204.21 (216.136.204.21): 56 data bytes > 64 bytes from 216.136.204.21: icmp_seq=0 ttl=50 time=338.878 ms > ^C Try this patch. Unless of course, you're not using IPFW version 1, in which case someone more knowledgeable will hopefully correct me :) <<<<<<< Index: ip_fw.c =================================================================== RCS file: /home/ncvs/src/sys/netinet/ip_fw.c,v retrieving revision 1.192 diff -u -r1.192 ip_fw.c --- sys/netinet/ip_fw.c 19 Feb 2003 05:47:33 -0000 1.192 +++ sys/netinet/ip_fw.c 25 May 2003 20:46:37 -0000 @@ -95,7 +95,7 @@ #ifdef SYSCTL_NODE SYSCTL_NODE(_net_inet_ip, OID_AUTO, fw, CTLFLAG_RW, 0, "Firewall"); -SYSCTL_INT(_net_inet_ip_fw, OID_AUTO, enable, CTLFLAG_RW, +SYSCTL_INT(_net_inet_ip_fw, OID_AUTO, enable, CTLFLAG_RW|CTLFLAG_SECURE3, &fw_enable, 0, "Enable ipfw"); SYSCTL_INT(_net_inet_ip_fw, OID_AUTO,one_pass,CTLFLAG_RW, &fw_one_pass, 0, >>>>>>> - Giorgos
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